| Title: | Information-optimal mixing at low Reynolds number |
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| Authors: | ID Cocconi, Luca (Author)
ID Shi, Yihong (Author)
ID Vilfan, Andrej, Institut "Jožef Stefan" (Author) |
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| Files: |  URL - Source URL, visit https://journals.aps.org/prl/abstract/10.1103/cl9m-cmhb
 PDF - Presentation file, download (537,83 KB)
MD5: 34B015924ABD1E069343734CADB5C125
Description: Raziskovalni podatki so na voljo na strani: https://zenodo.org/records/15745302.
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  IJS - Jožef Stefan Institute
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| Abstract: | Mutual information between particle positions before and after mixing provides a universal assumption-free measure of mixing efficiency at low Reynolds number that accounts for the kinematic reversibility of the Stokes equation. For a generic planar shear flow with time-dependent shear rate, we derive a compact expression for the mutual information as a nonlinear functional of the shearing protocol and solve the associated extremization problem exactly to determine the optimal control under both linear and nonlinear constraints, specifically total shear and total dissipation per unit volume. Remarkably, optimal protocols turn out to be universal and time-reversal symmetric in both cases. Our results establish a minimum energetic cost of erasing information in a broad class of nonequilibrium drift-diffusive systems. |
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| Keywords: | information thermodynamics, mixing enhancement, nonequilibrium statistical mechanics, shear flows |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 05.02.2025 |
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| Article acceptance date: | 24.06.2025 |
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| Publication date: | 15.07.2025 |
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| Publisher: | American Physical Society |
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| Year of publishing: | 2025 |
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| Number of pages: | str. 037101-1-037101-8 |
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| Numbering: | Vol. 135, iss. 3, [article no.] 037101 |
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| Source: | ZDA |
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| PID: | 20.500.12556/DiRROS-24504  |
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| UDC: | 53 |
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| ISSN on article: | 1079-7114 |
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| DOI: | 10.1103/cl9m-cmhb |
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| COBISS.SI-ID: | 242913283 |
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| Note: | Nasl. z nasl. zaslona;
Opis vira z dne 17. 7. 2025;
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| Publication date in DiRROS: | 03.12.2025 |
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| Views: | 110 |
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| Downloads: | 47 |
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